TM 9-2320-387-24-l REFERENCE INFORMATION FUEL SYSTEM When using a multimeter to measure current through wire 84A. disconnect the wire. Set the ammeter to a scale of at least 5 amps DC. Connect the red lead of the multimeler to wire 84A and the black lead to ground. With the rotary switch in the RUN position. measure current. Be sure to read the correct scale. Return the switch to the STOP position. Disconnect the multimeter and reconnect wire 84A. FUEL SUPPLY PRESSURE (PSI) STEIICE-R TEST 24 1. Select Fuel Supply Pressure Test (Test 24). Perform CAL. 2. Crank (or start) engine. FUEL PUMP VOLUME TEST 1. Disconnect fuel line at injection pump inlet and route fuel line into a suitable, 1 quart container. 2. Crank the engine for 30 seconds. 3. If the pump and lines are ok, you should get about 1 pint (l/2 quart) (8 L) in 30 seconds. -1 1. 2. WARNING Diesel fuel is highly flammable. Do not perform any procedures near fire, flames, or sparks. Severe injury or death will result. Disconnect the return line and direct it into a suitable container. Watch the fuel flow from the return line as you or an assistant try to start the engine. DC CURRENT 0 - 45 VOLTS STVICE-R TEST 89 1. Connect RED clip to the indicated test point; BLACK clip to negative or ground. 2. Start Test 89. DC Volts. 3. Displayed reading is in volts. . FUEL PUMP PRESSURE TEST PRESSURE GAUGE 1. Connect a tee into the fuel line between the fuel filter outlet and the injection pump inlet. 2. Attach gauge to tee. 3. Crank (or start) engine. FUEL SOLENOIDWIRE:89B 2-111